1170661 has 2 divisors, whose sum is σ = 1170662. Its totient is φ = 1170660.

The previous prime is 1170649. The next prime is 1170667. The reversal of 1170661 is 1660711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 540225 = 794^2 + 735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1170661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1170667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585330 + 585331.

It is an arithmetic number, because the mean of its divisors is an integer number (585331).

2^1170661 is an apocalyptic number.

It is an amenable number.

1170661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170661 is an equidigital number, since it uses as much as digits as its factorization.

1170661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1170661 is about 1081.9708868542. The cubic root of 1170661 is about 105.3926642814.

The spelling of 1170661 in words is "one million, one hundred seventy thousand, six hundred sixty-one".